package com.itheima.consumer.controller;


import com.itheima.consumer.pojo.User;
import com.netflix.hystrix.contrib.javanica.annotation.DefaultProperties;
import com.netflix.hystrix.contrib.javanica.annotation.HystrixCommand;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.cloud.client.ServiceInstance;
import org.springframework.cloud.client.discovery.DiscoveryClient;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;
import org.springframework.web.client.RestTemplate;

import java.util.List;

@RestController
@RequestMapping("/consumer")
@Slf4j
@DefaultProperties(defaultFallback = "defaultFallback")
public class ConsumerController {

    @Autowired
    private RestTemplate restTemplate;
    @Autowired
    private DiscoveryClient discoveryClient;

    @GetMapping("/{id}")
//    @HystrixCommand(fallbackMethod = "queryByIdFallBack")
    @HystrixCommand
    public String queryById(@PathVariable Long id){
        if (id==1){
           throw new RuntimeException("太忙了");
        }
      /*  String url="http://localhost:9091/user/8";
        List<ServiceInstance> serviceInstances = discoveryClient.getInstances("user_service");
        ServiceInstance serviceInstance = serviceInstances.get(0);
        url = "http://"+serviceInstance.getHost()+":"+serviceInstance.getPort()+"/user/"+id;
        User user = restTemplate.getForObject(url, User.class);*/
      String url="http://user_service/user/"+id;
        return restTemplate.getForObject(url,String.class);
    }

    public String queryByIdFallBack(Long id){
        log.error("查询用户信息失败。id:{}",id);
        return "对不起，网络太拥挤了";

    }

    public String defaultFallBack(){
        return "默认提示：对不起，网络太拥挤了";

    }
}
